Optical imaging lens assembly, image capturing unit and electronic device

ABSTRACT

An optical imaging lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The fourth lens element with negative refractive power has a concave object-side surface. The fifth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, and the image-side surface of the fifth lens element has at least one convex shape in an off-axis region thereof. The sixth lens element has a convex object-side surface and a concave image-side surface, and the image-side surface of the sixth lens element has at least one convex shape in an off-axis region thereof.

RELATED APPLICATIONS

This non-provisional application claims priority under 35 U.S.C. §119(a) to Taiwan Application No. 105102967, filed Jan. 29, 2016, theentire content of which is hereby incorporated by reference in itsentirety.

BACKGROUND

Technical Field

The present disclosure relates to an optical imaging lens assembly, animage capturing unit and an electronic device, more particularly to anoptical imaging lens assembly and an image capturing unit applicable toan electronic device.

Description of Related Art

In recent years, with the popularity of electronic devices having camerafunctionalities, the demand of miniaturized optical systems has beenincreasing. As the advanced semiconductor manufacturing technologieshave reduced the pixel size of sensors, and compact optical systems havegradually evolved toward the field of higher megapixels, there is anincreasing demand for compact optical systems featuring better imagequality.

Miniaturized optical systems have been widely applied to different kindsof electronic devices, such as smartphones, wearable devices, tabletpersonal computers, dashboard cameras, aerial photographic cameras andimage recognition systems, for various requirements. However, aconventional compact optical system is unable to satisfy therequirements of a large aperture stop and compact size simultaneously.Moreover, there is a manufacturing problem for the conventional compactoptical system since the axial distances between every two adjacent lenselements of the optical system are too small. Thus, there is a need todevelop an optical system featuring a large aperture stop, compact sizeand ease of manufacturing.

SUMMARY

According to one aspect of the present disclosure, an optical imaginglens assembly includes, in order from an object side to an image side, afirst lens element, a second lens element, a third lens element, afourth lens element, a fifth lens element and a sixth lens element. Thefirst lens element with positive refractive power has an object-sidesurface being convex. The second lens element has negative refractivepower. The fourth lens element with negative refractive power has anobject-side surface being concave. The fifth lens element with negativerefractive power has an object-side surface being convex and animage-side surface being concave, wherein the image-side surface of thefifth lens element has at least one convex shape in an off-axis regionthereof, and the object-side surface and the image-side surface of thefifth lens element are both aspheric. The sixth lens element has anobject-side surface being convex and an image-side surface beingconcave, wherein the image-side surface of the sixth lens element has atleast one convex shape in an off-axis region thereof, and theobject-side surface and the image-side surface of the sixth lens elementare both aspheric. The optical imaging lens assembly has a total of sixlens elements. There is an air gap in a paraxial region located betweenevery two lens elements of the optical imaging lens assembly that areadjacent to each other. When a curvature radius of the image-sidesurface of the fifth lens element is R10, a curvature radius of theobject-side surface of the sixth lens element is R11, an axial distancebetween the third lens element and the fourth lens element is T34, anaxial distance between the fourth lens element and the fifth lenselement is T45, the following conditions are satisfied:0<T34/T45<6.0; and0.30<R10/R11<2.40.

According to another aspect of the present disclosure, an imagecapturing unit includes the aforementioned optical imaging lens assemblyand an image sensor, wherein the image sensor is disposed on an imagesurface of the optical imaging lens assembly.

According to still another aspect of the present disclosure, anelectronic device includes the aforementioned image capturing unit.

According to yet still another aspect of the present disclosure, anoptical imaging lens assembly includes, in order from an object side toan image side, a first lens element, a second lens element, a third lenselement, a fourth lens element, a fifth lens element and a sixth lenselement. The first lens element with positive refractive power has anobject-side surface being convex. The second lens element has negativerefractive power. The fourth lens element with negative refractive powerhas an object-side surface being concave and an image-side surface beingconvex. The fifth lens element with negative refractive power has anobject-side surface being convex and an image-side surface beingconcave, wherein at least one of the object-side surface and theimage-side surface of the fifth lens element has at least one inflectionpoint, and the object-side surface and the image-side surface of thefifth lens element are both aspheric. The sixth lens element withnegative refractive power has an object-side surface being convex and animage-side surface being concave, wherein the image-side surface of thesixth lens element has at least one convex shape in an off-axis regionthereof, and the object-side surface and the image-side surface of thesixth lens element are both aspheric. The optical imaging lens assemblyhas a total of six lens elements. There is an air gap in a paraxialregion located between every two lens elements of the optical imaginglens assembly that are adjacent to each other. When a curvature radiusof the image-side surface of the fifth lens element is R10, a curvatureradius of the object-side surface of the sixth lens element is R11, anaxial distance between the third lens element and the fourth lenselement is T34, an axial distance between the fourth lens element andthe fifth lens element is T45, the following conditions are satisfied:0<T34/T45<6.0; and0.30<R10/R11.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be better understood by reading the followingdetailed description of the embodiments, with reference made to theaccompanying drawings as follows:

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure;

FIG. 2 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 1stembodiment;

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure;

FIG. 4 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 2ndembodiment;

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure;

FIG. 6 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 3rdembodiment;

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure;

FIG. 8 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 4thembodiment;

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure;

FIG. 10 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 5thembodiment;

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure;

FIG. 12 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 6thembodiment;

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure;

FIG. 14 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 7thembodiment;

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure;

FIG. 16 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 8thembodiment;

FIG. 17 is a schematic view of an image capturing unit according to the9th embodiment of the present disclosure;

FIG. 18 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 9thembodiment;

FIG. 19 is a schematic view of an image capturing unit according to the10th embodiment of the present disclosure;

FIG. 20 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 10thembodiment;

FIG. 21 shows an electronic device according to one embodiment;

FIG. 22 shows an electronic device according to another embodiment; and

FIG. 23 shows an electronic device according to still anotherembodiment.

DETAILED DESCRIPTION

An optical imaging lens assembly includes, in order from an object sideto an image side, a first lens element, a second lens element, a thirdlens element, a fourth lens element, a fifth lens element and a sixthlens element. The optical imaging lens assembly has a total of six lenselements.

There is an air gap in a paraxial region between every two lens elementsof the optical imaging lens assembly that are adjacent to each other;that is, each of the first through the sixth lens elements can be asingle and non-cemented lens element. Moreover, the manufacturingprocess of the cemented lenses is more complex than the non-cementedlenses. In particular, an image-side surface of one lens element and anobject-side surface of the following lens element need to have accuratecurvature to ensure these two lens elements will be highly cemented.However, during the cementing process, those two lens elements might notbe highly cemented due to displacement and it is thereby not favorablefor the image quality. Therefore, there can be an air gap in a paraxialregion between every two lens elements of the optical imaging lensassembly that are adjacent to each other in the present disclosure forsolving the problem generated by the cemented lens elements.

The first lens element with positive refractive power has an object-sidesurface being convex. Therefore, the first lens element is favorable forproviding sufficient positive refractive power so as to reduce a totaltrack length of the optical imaging lens assembly.

The second lens element has negative refractive power. Therefore, it isfavorable for correcting aberrations generated by the first lenselement.

The fourth lens element with negative refractive power has anobject-side surface being concave. The fourth lens element can have animage-side surface being convex. Therefore, it is favorable forcorrecting Petzval sum of the optical imaging lens assembly so as toimprove the flatness of an image surface and reduce astigmatism.

The fifth lens element with negative refractive power has an object-sidesurface being convex and an image-side surface being concave. Theimage-side surface of the fifth lens element can have at least oneconvex shape in an off-axis region thereof. One or more of theobject-side surface and the image-side surface of the fifth lens elementcan have at least one inflection point. Therefore, the refractive powerdistribution of the fourth lens element and the fifth lens element isfavorable for moving a principal point of the optical imaging lensassembly towards the object side while the total track length isreduced, and thereby reducing a back focal length of the optical imaginglens assembly and correcting field curvature at the peripheral region ofthe image.

The sixth lens element has an object-side surface being convex and animage-side surface being concave, wherein the image-side surface of thesixth lens element has at least one convex shape in an off-axis regionthereof. The sixth lens element can have negative refractive power.Therefore, it is favorable for reducing the incident angle of the lightprojecting onto an image sensor so as to improve the image-sensingefficiency of the image sensor and correcting aberrations at theoff-axis region.

When an axial distance between the third lens element and the fourthlens element is T34, an axial distance between the fourth lens elementand the fifth lens element is T45, the following condition is satisfied:0<T34/T45<6.0. Therefore, it is favorable for properly arranging theaxial distance between the fourth lens element and the fifth lenselement so as to prevent assembling problems due to overly close centersof the fourth and fifth lens elements, thereby increasing the assemblingyield rate. Preferably, the following condition can also be satisfied:0.20<T34/T45<4.2. More preferably, the following condition can also besatisfied: 0.40<T34/T45<3.0.

When a curvature radius of the image-side surface of the fifth lenselement is R10, a curvature radius of the object-side surface of thesixth lens element is R11, the following condition is satisfied:0.30<R10/R11 Therefore, the shapes of the fifth lens element and thesixth lens element are properly arranged so that it is favorable forpreventing insufficient aberration corrections at the off-axis regiondue to overly small curvature of the object-side surface of the sixthlens element, thereby improving the image quality. Preferably, thefollowing condition can also be satisfied: 0.30<R10/R11<2.40. Morepreferably, the following condition can also be satisfied:0.30<R10/R11<2.0. Furthermore preferably, the following condition canalso be satisfied: 0.30<R10/R11<1.45.

When a central thickness of the third lens element is CT3, the axialdistance between the third lens element and the fourth lens element isT34, the axial distance between the fourth lens element and the fifthlens element is T45, the following condition can be satisfied:0.90<(T34+T45)/CT3. Therefore, it is favorable for arranging the lenselements with sufficient axial distances between every two of the thirdlens element, the fourth lens element and the fifth lens element so asto prevent the third lens element through the fifth lens element fromoverly curved, and thereby the configuration of the lens elements isfavorable for reducing the total track length of the optical imaginglens assembly. Preferably, the following condition can also besatisfied: 1.15<(T34+T45)/CT3<3.5.

When a focal length of the first lens element is f1, a focal length ofthe second lens element is f2, a focal length of the third lens element130 is f3, a focal length of the fourth lens element is f4, a focallength of the fifth lens element is f5, a focal length of the sixth lenselement is f6, a focal length of the x-th lens element is fx, thefollowing condition can be satisfied: f1<|fx|, wherein x=2, 3, 4, 5, 6(which means that the conditions f1<|f2|, f1<|f3|, f1<|f4|, f1<|f5|, andf1<|f6| are satisfied). Therefore, the first lens element has sufficientpositive refractive power so that it is favorable for reducing the totaltrack length, thereby maintaining a compact size of the optical imaginglens assembly.

According to the disclosure, the central thickness of the sixth lenselement can be the largest among all central thicknesses of the lenselements of the optical imaging lens assembly. That is, the centralthickness of the sixth lens element is greater than the centralthickness of the first lens element, the central thickness of the secondlens element, the central thickness of the third lens element, thecentral thickness of the fourth lens element and the central thicknessof the fifth lens element. Therefore, a structural strength of the sixthlens element is favorable for molding and assembling processes.

When the focal length of the first lens element is f1, the focal lengthof the third lens element is f3, the following condition can besatisfied: 0<f1/|f3|<0.45. Therefore, it is favorable for balancing therefractive power of the first lens element and the third lens element soas to correct aberrations generated by the first lens element. Moreover,it is favorable for distributing the refractive power on the object sideof the optical imaging lens assembly so as to improve the image qualityand reduce the sensitivity.

When a focal length of the optical imaging lens assembly is f, acurvature radius of an image-side surface of the third lens element isR6, the following condition can be satisfied: −1.0<f/R6<0.25. Therefore,it is favorable for properly arranging the shape of the third lenselement so as to reduce ghosting.

When the focal length of the optical imaging lens assembly is f, acurvature radius of the object-side surface of the fifth lens element isR9, the curvature radius of the image-side surface of the fifth lenselement is R10, the following condition can be satisfied:(|R9|+|R10|)/f<3.60. Therefore, it is favorable for providing the fifthlens element with sufficient capability for correcting high orderaberrations. Preferably, the following condition can also be satisfied:0.75<(|R9|+|R10|)/f<3.0.

When the focal length of the optical imaging lens assembly is f, thefocal length of the second lens element is f2, the focal length of thethird lens element is f3, the focal length of the fourth lens element isf4, the focal length of the fifth lens element is f5, the focal lengthof the sixth lens element is f6, the focal length of the x-th lenselement is fx, the following condition can be satisfied:0.75<Σ(f/|fx|)<2.0, wherein x=2, 3, 4, 5, 6 (which means that thecondition 0.75<(f/|f2|)+(f/|f3|)+(f/|f4|)+(f/|f5|)+(f/|f6|)<2.0 issatisfied). Therefore, it is favorable for balancing the refractivepower among all lens elements so as to correct aberrations generated bystronger refractive power of the first lens element. Furthermore, it isfavorable for preventing excessive aberration corrections due to overlystrong refractive power of the second through the sixth lens elements.

When a central thickness of the fifth lens element is CT5, a centralthickness of the sixth lens element is CT6, the following condition canbe satisfied: 0<CT5/CT6<1.75. Therefore, the central thicknesses of thefifth lens element and the sixth lens element are favorable for keepingthe optical imaging lens assembly compact by further reducing the totaltrack length.

According to the present disclosure, an aperture stop can be configuredas a front stop or a middle stop. A front stop disposed between theimaged object and the first lens element can produce a telecentriceffect by providing a longer distance between an exit pupil and theimage surface, thereby improving the image-sensing efficiency of animage sensor (for example, CCD or CMOS). A middle stop disposed betweenthe first lens element and the image surface is favorable for enlargingthe view angle and thereby provides a wider field of view.

According to the present disclosure, the lens elements of the opticalimaging lens assembly can be made of glass or plastic material. When thelens elements are made of glass material, the refractive powerdistribution of the optical imaging lens assembly may be more flexibleto design. When the lens elements are made of plastic material,manufacturing costs can be effectively reduced. Furthermore, surfaces ofeach lens element can be arranged to be aspheric, since the asphericsurface of the lens element is easy to form a shape other than aspherical surface so as to have more controllable variables foreliminating aberrations thereof and to further decrease the requirednumber of the lens elements. Therefore, the total track length of theoptical imaging lens assembly can also be reduced.

According to the present disclosure, each of an object-side surface andan image-side surface has a paraxial region and an off-axial region. Theparaxial region refers to the region of the surface where light raystravel close to the optical axis, and the off-axial region refers to theregion of the surface away from the paraxial region. Particularly unlessotherwise stated, when the lens element has a convex surface, itindicates that the surface can be convex in the paraxial region thereof;when the lens element has a concave surface, it indicates that thesurface can be concave in the paraxial region thereof. Moreover, when aregion of refractive power or focus of a lens element is not defined, itindicates that the region of refractive power or focus of the lenselement can be in the paraxial region thereof.

According to the present disclosure, an image surface of the opticalimaging lens assembly on the corresponding image sensor can be flat orcurved, particularly a concave curved surface facing towards the objectside of the optical imaging lens assembly.

According to the present disclosure, the optical imaging lens assemblycan include at least one stop, such as an aperture stop, a glare stop ora field stop. Said glare stop or said field stop is allocated foreliminating the stray light and thereby improving the image qualitythereof.

According to the present disclosure, an image capturing unit includesthe aforementioned optical imaging lens assembly and an image sensor,wherein the image sensor is disposed on the image side and can belocated on or near an image surface of the aforementioned opticalimaging lens assembly. In some embodiments, the image capturing unit canfurther include a barrel member, a holder member or a combinationthereof.

In FIG. 21, FIG. 22, and FIG. 23, an image capturing unit 10 may beinstalled in, but not limited to, an electronic device, including asmart phone (FIG. 21), a tablet personal computer (FIG. 22) or awearable device (FIG. 23). The electronic devices shown in the figuresare only exemplary for showing the image capturing unit of the presentdisclosure installed in an electronic device and are not limitedthereto. In some embodiments, the electronic device can further include,but not limited to, a display unit, a control unit, a storage unit, arandom access memory unit (RAM), a read only memory unit (ROM) or acombination thereof.

According to the present disclosure, the optical imaging lens assemblycan be optionally applied to optical systems with a movable focus.Furthermore, the optical imaging lens assembly is featured with goodcapability in aberration corrections and high image quality, and can beapplied to 3D (three-dimensional) image capturing applications, inproducts such as such as digital cameras, mobile devices, digitaltablets, wearable devices, smart televisions, network surveillancedevices, motion sensing input devices, dashboard cameras, vehicle backupcameras and other electronic imaging devices. According to the abovedescription of the present disclosure, the following specificembodiments are provided for further explanation.

1st Embodiment

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure. FIG. 2 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 1stembodiment. In FIG. 1, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 190. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 100, a first lens element 110, a second lens element 120, a thirdlens element 130, a fourth lens element 140, a fifth lens element 150, asixth lens element 160, an IR-cut filter 170 and an image surface 180,wherein the optical imaging lens assembly has a total of six lenselements (110-160). There is an air gap in a paraxial region betweenevery two lens elements (110-160) of the optical imaging lens assemblythat are adjacent to each other.

The first lens element 110 with positive refractive power has anobject-side surface 111 being convex and an image-side surface 112 beingconcave. The first lens element 110 is made of plastic material and hasthe object-side surface 111 and the image-side surface 112 being bothaspheric.

The second lens element 120 with negative refractive power has anobject-side surface 121 being concave and an image-side surface 122being concave. The second lens element 120 is made of plastic materialand has the object-side surface 121 and the image-side surface 122 beingboth aspheric.

The third lens element 130 with positive refractive power has anobject-side surface 131 being convex and an image-side surface 132 beingconcave. The third lens element 130 is made of plastic material and hasthe object-side surface 131 and the image-side surface 132 being bothaspheric.

The fourth lens element 140 with negative refractive power has anobject-side surface 141 being concave and an image-side surface 142being convex. The fourth lens element 140 is made of plastic materialand has the object-side surface 141 and the image-side surface 142 beingboth aspheric.

The fifth lens element 150 with negative refractive power has anobject-side surface 151 being convex and an image-side surface 152 beingconcave. The fifth lens element 150 is made of plastic material and hasthe object-side surface 151 and the image-side surface 152 being bothaspheric. The image-side surface 152 of the fifth lens element 150 hasat least one convex shape in an off-axis region thereof. Each of theobject-side surface 151 and the image-side surface 152 of the fifth lenselement 150 has at least one inflection point.

The sixth lens element 160 with negative refractive power has anobject-side surface 161 being convex and an image-side surface 162 beingconcave. The sixth lens element 160 is made of plastic material and hasthe object-side surface 161 and the image-side surface 162 being bothaspheric. The image-side surface 162 of the sixth lens element 160 hasat least one convex shape in an off-axis region thereof.

In this embodiment, a central thickness of the sixth lens element 160 isthe largest among all central thicknesses of the lens elements (110-160)of the optical imaging lens assembly. That is, the sixth lens element160 has larger central thickness than the first lens element 110, thesecond lens element 120, the third lens element 130, the fourth lenselement 140 and the fifth lens element 150.

The IR-cut filter 170 is made of glass material and located between thesixth lens element 160 and the image surface 180, and will not affectthe focal length of the optical imaging lens assembly. The image sensor190 is disposed on or near the image surface 180 of the optical imaginglens assembly.

The equation of the aspheric surface profiles of the aforementioned lenselements of the 1st embodiment is expressed as follows:

${{X(Y)} = {{\left( {Y^{2}/R} \right)/\left( {1 + {{sqrt}\left( {1 - {\left( {1 + k} \right) \times \left( {Y/R} \right)^{2}}} \right)}} \right)} + {\sum\limits_{i}{({Ai}) \times \left( Y^{i} \right)}}}},$

where,

X is the relative distance between a point on the aspheric surfacespaced at a distance Y from an optical axis and the tangential plane atthe aspheric surface vertex on the optical axis;

Y is the vertical distance from the point on the aspheric surface to theoptical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient, and in the embodiments, i may be,but is not limited to, 4, 6, 8, 10, 12, 14 and 16.

In the optical imaging lens assembly of the image capturing unitaccording to the 1st embodiment, when a focal length of the opticalimaging lens assembly is f, an f-number of the optical imaging lensassembly is Fno, and half of a maximal field of view of the opticalimaging lens assembly is HFOV, these parameters have the followingvalues: f=4.15 millimeters (mm); Fno=2.15; and HFOV=37.5 degrees (deg.).

When a curvature radius of the image-side surface 152 of the fifth lenselement 150 is R10, a curvature radius of the object-side surface 161 ofthe sixth lens element 160 is R11, the following condition is satisfied:R10/R11=1.28.

When a curvature radius of the object-side surface 151 of the fifth lenselement 150 is R9, the curvature radius of the image-side surface 152 ofthe fifth lens element 150 is R10, the focal length of the opticalimaging lens assembly is f, the following condition is satisfied:(|R9|+|R10|)/f=1.59.

When the focal length of the optical imaging lens assembly is f, acurvature radius of the image-side surface 132 of the third lens element130 is R6, the following condition is satisfied: f/R6=0.39.

When an axial distance between the third lens element 130 and the fourthlens element 140 is T34, an axial distance between the fourth lenselement 140 and the fifth lens element 150 is T45, the followingcondition is satisfied: T34/T45=1.08.

When a central thickness of the third lens element 130 is CT3, the axialdistance between the third lens element 130 and the fourth lens element140 is T34, the axial distance between the fourth lens element 140 andthe fifth lens element 150 is T45, the following condition is satisfied:(T34+T45)/CT3=2.03.

When a central thickness of the fifth lens element 150 is CT5, a centralthickness of the sixth lens element 160 is CT6, the following conditionis satisfied: CT5/CT6=0.53.

When a focal length of the first lens element is f1, a focal length ofthe third lens element 130 is f3, the following condition is satisfied:f1/|f3|=0.21.

When the focal length of the optical imaging lens assembly is f, a focallength of the second lens element 120 is f2, the focal length of thethird lens element 130 is f3, a focal length of the fourth lens element140 is f4, a focal length of the fifth lens element 150 is f5, a focallength of the sixth lens element is f6, a focal length of the x-th lenselement is fx, the following condition is satisfied: Σ(f/|fx|)=1.54,wherein x=2, 3, 4, 5, 6.

The detailed optical data of the 1st embodiment are shown in Table 1 andthe aspheric surface data are shown in Table 2 below.

TABLE 1 1st Embodiment f = 4.15 mm, Fno = 2.15, HFOV = 37.5 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # Length0 Object Plano Infinity 1 Ape. Stop Plano −0.297 2 Lens 1 1.547 (ASP)0.639 Plastic 1.544 56.0 2.87 3 150.034 (ASP) 0.054 4 Lens 2 −49.473(ASP) 0.230 Plastic 1.614 25.6 −4.91 5 3.218 (ASP) 0.276 6 Lens 3 4.401(ASP) 0.284 Plastic 1.544 56.0 13.57 7 10.653 (ASP) 0.300 8 Lens 4−8.774 (ASP) 0.365 Plastic 1.660 20.4 −85.99 9 −10.550 (ASP) 0.277 10Lens 5 3.821 (ASP) 0.385 Plastic 1.614 25.6 −19.33 11 2.780 (ASP) 0.24412 Lens 6 2.170 (ASP) 0.730 Plastic 1.544 56.0 −31.77 13 1.700 (ASP)0.500 14 IR-cut filter Plano 0.210 Glass 1.517 64.2 — 15 Plano 0.305 16Image Plano — Note: Reference wavelength is 587.6 nm (d-line). Effectiveradius of the object-side surface of the fifth lens element (Surface 10)is 1.520 mm.

TABLE 2 Aspheric Coefficients Surface # 2 3 4 5 6 7 k = −4.6281E−019.0000E+01 9.0000E+01 −1.6161E+00 −8.7911E+01 −6.2534E+01 A4 =1.0443E−02 −2.0332E−01 −2.9451E−01 −1.6467E−01 −2.7214E−02 −7.7449E−02A6 = −5.9812E−03 6.6843E−01 1.1931E+00 6.7837E−01 −2.1110E−01−1.4968E−02 A8 = 5.1537E−02 −1.3088E+00 −2.5093E+00 −1.3303E+005.1203E−01 −2.8738E−02 A10 = −1.6489E−01 1.4768E+00 3.2338E+001.5945E+00 −1.0856E+00 6.5468E−04 A12 = 1.9708E−01 −9.9013E−01−2.3337E+00 −8.7008E−01 1.3468E+00 1.0144E−02 A14 = −1.0501E−012.7787E−01 7.0689E−01 1.5302E−01 −5.6061E−01 1.7191E−01 A16 = — — — — —−1.0605E−01 Surface # 8 9 10 11 12 13 k = −3.8134E+01 −6.6641E+002.7858E+00 −9.0219E+00 −1.0400E+01 −9.6167E−01 A4 = −2.7045E−028.4222E−03 4.2132E−02 −2.2641E−02 −2.2979E−01 −2.3964E−01 A6 =−5.7465E−02 −2.4446E−01 −3.0440E−01 −4.4043E−02 1.1504E−01 1.2184E−01 A8= 1.5178E−01 5.1653E−01 3.5566E−01 3.2887E−02 −5.1300E−02 −5.2770E−02A10 = −2.9625E−01 −6.2308E−01 −2.7949E−01 −1.8970E−02 2.1954E−021.5505E−02 A12 = 2.7883E−01 4.4498E−01 1.2928E−01 7.4394E−03 −6.0506E−03−2.7765E−03 A14 = −9.2313E−02 −1.6558E−01 −3.1635E−02 −1.5164E−038.6719E−04 2.6911E−04 A16 = — 2.4473E−02 3.2430E−03 1.1768E−04−4.9399E−05 −1.0687E−05

In Table 1, the curvature radius, the thickness and the focal length areshown in millimeters (mm). Surface numbers 0-16 represent the surfacessequentially arranged from the object-side to the image-side along theoptical axis. In Table 2, k represents the conic coefficient of theequation of the aspheric surface profiles. A4-A16 represent the asphericcoefficients ranging from the 4th order to the 16th order. The tablespresented below for each embodiment are the corresponding schematicparameter and aberration curves, and the definitions of the terms in thetables are the same as Table 1 and Table 2 of the 1st embodiment.Therefore, an explanation in this regard will not be provided again.

2nd Embodiment

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure. FIG. 4 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 2ndembodiment. In FIG. 3, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 290. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 210, an aperture stop 200, a second lens element 220, a thirdlens element 230, a fourth lens element 240, a fifth lens element 250, asixth lens element 260, an IR-cut filter 270 and an image surface 280,wherein the optical imaging lens assembly has a total of six lenselements (210-260). There is an air gap in a paraxial region betweenevery two lens elements (210-260) of the optical imaging lens assemblythat are adjacent to each other.

The first lens element 210 with positive refractive power has anobject-side surface being 211 convex and an image-side surface 212 beingconcave. The first lens element 210 is made of plastic material and hasthe object-side surface 211 and the image-side surface 212 being bothaspheric.

The second lens element 220 with negative refractive power has anobject-side surface 221 being convex and an image-side surface 222 beingconcave. The second lens element 220 is made of plastic material and hasthe object-side surface 221 and the image-side surface 222 being bothaspheric.

The third lens element 230 with positive refractive power has anobject-side surface 231 being convex and an image-side surface 232 beingconvex. The third lens element 230 is made of plastic material and hasthe object-side surface 231 and the image-side surface 232 being bothaspheric.

The fourth lens element 240 with negative refractive power has anobject-side surface 241 being concave and an image-side surface 242being convex. The fourth lens element 240 is made of plastic materialand has the object-side surface 241 and the image-side surface 242 beingboth aspheric.

The fifth lens element 250 with negative refractive power has anobject-side surface 251 being convex and an image-side surface 252 beingconcave. The fifth lens element 250 is made of plastic material and hasthe object-side surface 251 and the image-side surface 252 being bothaspheric. The image-side surface 252 of the fifth lens element 250 hasat least one convex shape in an off-axis region thereof. Each of theobject-side surface 251 and the image-side surface 252 of the fifth lenselement 250 has at least one inflection point.

The sixth lens element 260 with negative refractive power has anobject-side surface 261 being convex and an image-side surface 262 beingconcave. The sixth lens element 260 is made of plastic material and hasthe object-side surface 261 and the image-side surface 262 being bothaspheric. The image-side surface 262 of the sixth lens element 260 hasat least one convex shape in an off-axis region thereof.

In this embodiment, a central thickness of the sixth lens element 260 isthe largest among all central thicknesses of the lens elements (210-260)of the optical imaging lens assembly.

The IR-cut filter 270 is made of glass material and located between thesixth lens element 260 and the image surface 280, and will not affectthe focal length of the optical imaging lens assembly. The image sensor290 is disposed on or near the image surface 280 of the optical imaginglens assembly.

The detailed optical data of the 2nd embodiment are shown in Table 3 andthe aspheric surface data are shown in Table 4 below.

TABLE 3 2nd Embodiment f = 4.02 mm, Fno = 2.30, HFOV = 38.3 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # Length0 Object Plano Infinity 1 Lens 1 1.465 (ASP) 0.526 Plastic 1.545 56.12.93 2 15.483 (ASP) −0.009 3 Ape. Stop Plano 0.059 4 Lens 2 6.457 (ASP)0.230 Plastic 1.639 23.5 −6.60 5 2.515 (ASP) 0.344 6 Lens 3 19.084 (ASP)0.371 Plastic 1.545 56.1 16.41 7 −16.706 (ASP) 0.177 8 Lens 4 −2.876(ASP) 0.413 Plastic 1.639 23.5 −20.80 9 −3.876 (ASP) 0.203 10 Lens 52.796 (ASP) 0.406 Plastic 1.545 56.1 −133.96 11 2.555 (ASP) 0.289 12Lens 6 2.110 (ASP) 0.664 Plastic 1.545 56.1 −18.81 13 1.555 (ASP) 0.50014 IR-cut filter Plano 0.175 Glass 1.517 64.2 — 15 Plano 0.348 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 4 Aspheric Coefficients Surface # 1 2 4 5 6 7 k = −2.3473E−01−5.6679E+01 −2.8826E+01 3.3280E−01 −8.9109E+01 −6.1090E+01 A4 =6.5720E−03 −2.1104E−01 −2.9080E−01 −1.5011E−01 −1.4334E−01 −1.7607E−01A6 = −2.0886E−03 6.9743E−01 1.0948E+00 5.4164E−01 −8.2206E−02 3.3854E−02A8 = 4.8999E−02 −1.4354E+00 −2.4033E+00 −1.0900E+00 2.9417E−01−1.7062E−01 A10 = −2.0754E−01 1.6786E+00 3.5034E+00 1.6296E+00−8.7703E−01 2.0439E−01 A12 = 2.7555E−01 −1.0926E+00 −2.8733E+00−1.2252E+00 1.2399E+00 1.9365E−01 A14 = −1.7444E−01 2.6428E−011.0114E+00 4.4076E−01 −5.0438E−01 −2.4087E−01 A16 = — — — — — 4.6813E−02Surface # 8 9 10 11 12 13 k = 6.1434E+00 −7.0231E+00 −1.6502E+00−2.5606E+01 −1.9421E+00 −9.4835E−01 A4 = −1.1649E−01 −1.3673E−01−4.8836E−02 8.0931E−02 −3.3828E−01 −2.7766E−01 A6 = 3.4257E−011.4499E−01 −8.3355E−02 −1.1345E−01 2.2923E−01 1.5001E−01 A8 =−9.0874E−01 −1.8456E−01 6.5141E−02 5.7874E−02 −1.0779E−01 −6.4079E−02A10 = 1.6622E+00 2.9055E−01 −4.2164E−02 −1.9288E−02 3.2041E−021.7405E−02 A12 = −1.3035E+00 −2.1462E−01 2.1090E−02 4.1481E−03−5.5292E−03 −2.8098E−03 A14 = 3.7510E−01 6.9863E−02 −5.8257E−03−5.2363E−04 5.0742E−04 2.4666E−04 A16 = — −8.3673E−03 6.5048E−042.9082E−05 −1.9242E−05 −9.0253E−06

In the 2nd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 2nd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 3 and Table 4 asthe following values and satisfy the following conditions:

2nd Embodiment f [mm] 4.02 Fno 2.30 HFOV [deg.] 38.3 R10/R11 1.21(|R9| + |R10|)/f 1.33 f/R6 −0.24 T34/T45 0.87 (T34 + T45)/CT3 1.02CT5/CT6 0.61 f1/|f3| 0.18 Σ(f/|fx|) 1.29

3rd Embodiment

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure. FIG. 6 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 3rdembodiment. In FIG. 5, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 390. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 300, a first lens element 310, a second lens element 320, a thirdlens element 330, a fourth lens element 340, a fifth lens element 350, asixth lens element 360, an IR-cut filter 370 and an image surface 380,wherein the optical imaging lens assembly has a total of six lenselements (310-360). There is an air gap in a paraxial region betweenevery two lens elements (310-360) of the optical imaging lens assemblythat are adjacent to each other.

The first lens element 310 with positive refractive power has anobject-side surface 311 being convex and an image-side surface 312 beingconcave. The first lens element 310 is made of plastic material and hasthe object-side surface 311 and the image-side surface 312 being bothaspheric.

The second lens element 320 with negative refractive power has anobject-side surface 321 being convex and an image-side surface 322 beingconcave. The second lens element 320 is made of plastic material and hasthe object-side surface 321 and the image-side surface 322 being bothaspheric.

The third lens element 330 with negative refractive power has anobject-side surface 331 being convex and an image-side surface 332 beingconcave. The third lens element 330 is made of plastic material and hasthe object-side surface 331 and the image-side surface 332 being bothaspheric.

The fourth lens element 340 with negative refractive power has anobject-side surface 341 being concave and an image-side surface 342being convex. The fourth lens element 340 is made of plastic materialand has the object-side surface 341 and the image-side surface 342 beingboth aspheric.

The fifth lens element 350 with negative refractive power has anobject-side surface 351 being convex and an image-side surface 352 beingconcave. The fifth lens element 350 is made of plastic material and hasthe object-side surface 351 and the image-side surface 352 being bothaspheric. The image-side surface 352 of the fifth lens element 350 hasat least one convex shape in an off-axis region thereof. Each of theobject-side surface 351 and the image-side surface 352 of the fifth lenselement 350 has at least one inflection point.

The sixth lens element 360 with negative refractive power has anobject-side surface 361 being convex and an image-side surface 362 beingconcave. The sixth lens element 360 is made of plastic material and hasthe object-side surface 361 and the image-side surface 362 being bothaspheric. The image-side surface 362 of the sixth lens element 360 hasat least one convex shape in an off-axis region thereof.

In this embodiment, a central thickness of the sixth lens element 360 isthe largest among all central thicknesses of the lens elements (310-360)of the optical imaging lens assembly.

The IR-cut filter 370 is made of glass material and located between thesixth lens element 360 and the image surface 380, and will not affectthe focal length of the optical imaging lens assembly. The image sensor390 is disposed on or near the image surface 380 of the optical imaginglens assembly.

The detailed optical data of the 3rd embodiment are shown in Table 5 andthe aspheric surface data are shown in Table 6 below.

TABLE 5 3rd Embodiment f = 4.01 mm, Fno = 2.35, HFOV = 38.3 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # Length0 Object Plano Infinity 1 Ape. Stop Plano −0.241 2 Lens 1 1.472 (ASP)0.521 Plastic 1.544 55.9 2.76 3 75.723 (ASP) 0.050 4 Lens 2 16.975 (ASP)0.230 Plastic 1.639 23.5 −5.86 5 3.049 (ASP) 0.354 6 Lens 3 23.852 (ASP)0.339 Plastic 1.515 56.5 −133.77 7 17.629 (ASP) 0.093 8 Lens 4 −8.721(ASP) 0.344 Plastic 1.660 20.4 −133.78 9 9.828 (ASP) 0.246 10 Lens 52.871 (ASP) 0.427 Plastic 1.515 56.5 −133.58 11 2.617 (ASP) 0.270 12Lens 6 1.980 (ASP) 0.752 Plastic 1.544 55.9 −33.32 13 1.546 (ASP) 0.50014 IR-cut filter Plano 0.145 Glass 1.517 64.2 — 15 Plano 0.391 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 6 Aspheric Coefficients Surface # 2 3 4 5 6 7 k= −2.5458E−01  9.0000E+01   8.7187E+01   2.9181E+00 −8.9109E+01 −6.1090E+01 A4=  3.4126E−03 −1.7914E−01 −2.4212E−01 −1.3217E−01 −2.1888E−01 −3.7413E−01A6=   5.9877E−03   6.2319E−01   1.0455E+00   5.5204E−01 −6.1524E−03  8.0223E−01 A8= −1.3370E−03 −1.3658E+00 −2.4137E+00 −1.1038E+00  3.2527E−01 −1.5693E+00 A10= −1.5374E−01   1.7119E+00   3.6745E+00  1.4605E+00 −1.4724E+00   1.3130E+00 A12=   2.8119E−01 −1.3829E+00−3.2444E+00 −6.7020E−01   2.6347E+00 −1.2869E−01 A14= −2.4164E−01  4.6372E−01   1.2136E+00 −4.1830E−02 −1.3588E+00 −1.9595E−01 A16= — — —— —   3.3111E−02 Surface # 8 9 10 11 12 13 k=   6.2412E+00 −7.0231E+00−1.2829E+00 −2.3917E+01 −1.9225E+00 −9.0944E−01 A4= −2.5940E−01−1.0054E−01   2.1045E−02   7.0634E−02 −3.3579E−01 −2.6497E−01 A6=  1.0134E+00   2.0451E−01 −2.1422E−01 −7.9193E−02   2.2487E−01  1.3881E−01 A8= −1.9616E+00 −1.6307E−01   2.5065E−01   2.4115E−02−1.0435E−01 −5.7970E−02 A10=   2.0418E+00   7.3075E−02 −2.1919E−01−2.7521E−03   3.1073E−02   1.5443E−02 A12= −1.0728E+00 −9.0368E−03  1.1961E−01 −2.3108E−04 −5.4261E−03 −2.4596E−03 A14=   2.2051E−01−7.1950E−03 −3.4936E−02   7.0465E−05   5.0591E−04   2.1385E−04 A16= —  2.2652E−03   4.1549E−03 −3.1378E−06 −1.9509E−05 −7.7636E−06

In the 3rd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 3rd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 5 and Table 6 asthe following values and satisfy the following conditions:

3rd Embodiment f [mm] 4.01 Fno 2.35 HFOV [deg.] 38.3 R10/R11 1.32(|R9| + |R10|)/f 1.37 f/R6 0.23 T34/T45 0.38 (T34 + T45)/CT3 1.00CT5/CT6 0.57 f1/|f3| 0.02 Σ(f/|fx|) 0.89

4th Embodiment

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure. FIG. 8 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 4thembodiment. In FIG. 7, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 490. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 400, a first lens element 410, a second lens element 420, a thirdlens element 430, a fourth lens element 440, a fifth lens element 450, asixth lens element 460, a IR-cut filter 470 and an image surface 480,wherein the optical imaging lens assembly has a total of six lenselements (410-460). There is an air gap in a paraxial region betweenevery two lens elements (410-460) of the optical imaging lens assemblythat are adjacent to each other.

The first lens element 410 with positive refractive power has anobject-side surface 411 being convex and an image-side surface 412 beingconcave. The first lens element 410 is made of plastic material and hasthe object-side surface 411 and the image-side surface 412 being bothaspheric.

The second lens element 420 with negative refractive power has anobject-side surface 421 being convex and an image-side surface 422 beingconcave. The second lens element 420 is made of plastic material and hasthe object-side surface 421 and the image-side surface 422 being bothaspheric.

The third lens element 430 with positive refractive power has anobject-side surface 431 being convex and an image-side surface 432 beingconcave. The third lens element 430 is made of plastic material and hasthe object-side surface 431 and the image-side surface 432 being bothaspheric.

The fourth lens element 440 with negative refractive power has anobject-side surface 441 being concave and an image-side surface 442being convex. The fourth lens element 440 is made of plastic materialand has the object-side surface 441 and the image-side surface 442 beingboth aspheric.

The fifth lens element 450 with negative refractive power has anobject-side surface 451 being convex and an image-side surface 452 beingconcave. The fifth lens element 450 is made of plastic material and hasthe object-side surface 451 and the image-side surface 452 being bothaspheric. The image-side surface 452 of the fifth lens element 450 hasat least one convex shape in an off-axis region thereof. Each of theobject-side surface 451 and the image-side surface 452 of the fifth lenselement 450 has at least one inflection point.

The sixth lens element 460 with negative refractive power has anobject-side surface 461 being convex and an image-side surface 462 beingconcave. The sixth lens element 460 is made of plastic material and hasthe object-side surface 461 and the image-side surface 462 being bothaspheric. The image-side surface 462 of the sixth lens element 460 hasat least one convex shape in an off-axis region thereof.

In this embodiment, a central thickness of the sixth lens element 460 isthe largest among all central thicknesses of the lens elements (410-460)of the optical imaging lens assembly.

The IR-cut filter 470 is made of glass material and located between thesixth lens element 460 and the image surface 480, and will not affectthe focal length of the optical imaging lens assembly. The image sensor490 is disposed on or near the image surface 480 of the optical imaginglens assembly.

The detailed optical data of the 4th embodiment are shown in Table 7 andthe aspheric surface data are shown in Table 8 below.

TABLE 7 4th Embodiment f = 4.41 mm, Fno = 2.05, HFOV = 36.0 deg. SurfaceCurvature Focal # Radius Thickness Material Index Abbe # Length 0 ObjectPlano Infinity 1 Ape. Stop Plano −0.398 2 Lens 1 1.615 (ASP) 0.703Plastic 1.544 55.9 3.27 3 14.727 (ASP) 0.074 4 Lens 2 7.546 (ASP) 0.250Plastic 1.639 23.5 −5.66 5 2.414 (ASP) 0.271 6 Lens 3 5.093 (ASP) 0.501Plastic 1.544 55.9 9.75 7 121.295 (ASP) 0.362 8 Lens 4 −2.163 (ASP)0.320 Plastic 1.639 23.5 −146.38 9 −2.342 (ASP) 0.135 10 Lens 5 3.572(ASP) 0.428 Plastic 1.544 55.9 −15.76 11 2.415 (ASP) 0.249 12 Lens 62.473 (ASP) 0.740 Plastic 1.535 55.7 −24.42 13 1.862 (ASP) 0.600 14IR-cut filter Plano 0.210 Glass 1.517 64.2 — 15 Plano 0.249 16 ImagePlano — — Note: Reference wavelength is 587.6 nm (d-line). Effectiveradius of the object-side surface of the second lens element (Surface 4)is 1.020 mm.

TABLE 8 Aspheric Coefficients Surface # 2 3 4 5 6 7 k= −6.7354E−02−8.8418E+01 −6.1855E+01 −2.5191E+01 −7.4640E+01   9.1980E+00 A4=  3.9372E−03 −1.6653E−01 −3.0857E−01 −2.2753E−02 −3.9949E−02 −3.3727E−02A6= −2.1478E−02   4.5652E−01   8.5635E−01   2.6271E−01 −4.4246E−02−9.0607E−02 A8=   1.0034E−01 −7.3029E−01 −1.3785E+00 −5.0872E−01−1.6791E−02   2.6788E−01 A10= −1.9244E−01   7.4510E−01   1.4516E+00  6.9970E−01   1.2727E−01 −6.1762E−01 A12=   1.7135E−01 −4.6410E−01−9.1552E−01 −5.5546E−01 −1.9226E−01   7.7399E−01 A14= −6.0594E−02  1.1821E−01   2.4775E−01   1.9143E−01   9.5371E−02 −5.0518E−01 A16= — —— — —   1.3532E−01 Surface # 8 9 10 11 12 13 k= −8.1106E−01 −1.1781E+01−5.4716E+01 −3.5016E+01 −1.7726E+00 −7.9257E−01 A4=   7.4034E−02−2.5869E−02   8.5552E−02   2.1713E−02 −3.1939E−01 −2.1291E−01 A6=−1.1351E−01 −1.1653E−01 −2.4202E−01 −7.5796E−02   1.7658E−01  9.0890E−02 A8=   8.8873E−02   1.5834E−01   1.7106E−01   4.5618E−02−5.4513E−02 −3.0083E−02 A10= −1.3483E−02 −6.7795E−02 −6.8410E−02−1.6163E−02   1.0355E−02   6.7230E−03 A12= −2.1893E−02   7.2212E−03  9.2972E−03   3.0602E−03 −1.1941E−03 −9.2615E−04 A14=   4.1450E−03  8.5537E−04   5.1002E−04 −2.2932E−04   7.6834E−05   6.9551E−05 A16= — —— — −2.1202E−06 −2.1528E−06

In the 4th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 4th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 7 and Table 8 asthe following values and satisfy the following conditions:

4th Embodiment f [mm] 4.41 Fno 2.05 HFOV [deg.] 36.0 R10/R11 0.98(|R9| + |R10|)/f 1.36 f/R6 0.04 T34/T45 2.68 (T34 + T45)/CT3 0.99CT5/CT6 0.58 f1/|f3| 0.34 Σ(f/|fx|) 1.72

5th Embodiment

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure. FIG. 10 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 5thembodiment. In FIG. 9, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 590. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 500, a first lens element 510, a second lens element 520, a stop501, a third lens element 530, a fourth lens element 540, a fifth lenselement 550, a sixth lens element 560, an IR-cut filter 570 and an imagesurface 580, wherein the optical imaging lens assembly has a total ofsix lens elements (510-560). There is an air gap in a paraxial regionbetween every two lens elements (510-560) of the optical imaging lensassembly that are adjacent to each other. The stop 501 is, for example,a glare stop or a field stop.

The first lens element 510 with positive refractive power has anobject-side surface being 511 convex and an image-side surface 512 beingconcave. The first lens element 510 is made of plastic material and hasthe object-side surface 511 and the image-side surface 512 being bothaspheric.

The second lens element 520 with negative refractive power has anobject-side surface 521 being convex and an image-side surface 522 beingconcave. The second lens element 520 is made of plastic material and hasthe object-side surface 521 and the image-side surface 522 being bothaspheric.

The third lens element 530 with positive refractive power has anobject-side surface 531 being convex and an image-side surface 532 beingconvex. The third lens element 530 is made of plastic material and hasthe object-side surface 531 and the image-side surface 532 being bothaspheric.

The fourth lens element 540 with negative refractive power has anobject-side surface 541 being concave and an image-side surface 542being convex. The fourth lens element 540 is made of plastic materialand has the object-side surface 541 and the image-side surface 542 beingboth aspheric.

The fifth lens element 550 with negative refractive power has anobject-side surface 551 being convex and an image-side surface 552 beingconcave. The fifth lens element 550 is made of plastic material and hasthe object-side surface 551 and the image-side surface 552 being bothaspheric. The image-side surface 552 of the fifth lens element 550 hasat least one convex shape in an off-axis region thereof. Each of theobject-side surface 551 and the image-side surface 552 of the fifth lenselement 550 has at least one inflection point.

The sixth lens element 560 with negative refractive power has anobject-side surface 561 being convex and an image-side surface 562 beingconcave. The sixth lens element 560 is made of plastic material and hasthe object-side surface 561 and the image-side surface 562 being bothaspheric. The image-side surface 562 of the sixth lens element 560 hasat least one convex shape in an off-axis region thereof.

In this embodiment, a central thickness of the sixth lens element 560 isthe largest among all central thicknesses of the lens elements (510-560)of the optical imaging lens assembly.

The IR-cut filter 570 is made of glass material and located between thesixth lens element 560 and the image surface 580, and will not affectthe focal length of the optical imaging lens assembly. The image sensor590 is disposed on or near the image surface 580 of the optical imaginglens assembly.

The detailed optical data of the 5th embodiment are shown in Table 9 andthe aspheric surface data are shown in Table 10 below.

TABLE 9 5th Embodiment f = 3.95 mm, Fno = 2.24, HFOV = 39.2 deg. SurfaceCurvature Focal # Radius Thickness Material Index Abbe # Length 0 ObjectPlano Infinity 1 Ape. Stop Plano −0.306 2 Lens 1 1.397 (ASP) 0.490Plastic 1.544 55.9 3.38 3 5.114 (ASP) 0.111 4 Lens 2 4.592 (ASP) 0.225Plastic 1.639 23.5 −6.37 5 2.116 (ASP) 0.170 6 Stop Plano 0.026 7 Lens 34.519 (ASP) 0.418 Plastic 1.544 55.9 6.32 8 −13.924 (ASP) 0.208 9 Lens 4−1.925 (ASP) 0.310 Plastic 1.639 23.5 −31.46 10 −2.263 (ASP) 0.253 11Lens 5 3.443 (ASP) 0.399 Plastic 1.544 55.9 −172.53 12 3.185 (ASP) 0.32513 Lens 6 2.782 (ASP) 0.550 Plastic 1.544 55.9 −7.95 14 1.575 (ASP)0.500 15 IR-cut filter Plano 0.210 Glass 1.517 64.2 — 16 Plano 0.295 17Image Plano — Note: Reference wavelength is 587.6 nm (d-line). Effectiveradius of the stop (Surface 6) is 0.845 mm.

TABLE 10 Aspheric Coefficients Surface # 2 3 4 5 7 8 k= −2.4898E−01−3.6044E+00 −5.2730E+01 −3.2485E+01 −3.3159E−02   5.3448E+01 A4=  1.3770E−02 −1.9421E−01 −3.6797E−01   5.7987E−02 −1.2067E−01−4.5723E−02 A6= −2.9989E−02   4.5800E−01   1.0026E+00 −1.3364E−01−1.4820E−01   1.1295E−01 A8=   2.3487E−01 −1.0266E+00 −1.7916E+00  9.3016E−01   7.0117E−01 −5.2418E−01 A10= −6.6339E−01   1.8250E+00  2.7753E+00 −1.4006E+00 −1.5463E+00   4.7689E−01 A12=   8.7875E−01−1.9049E+00 −2.8936E+00   9.4498E−01   1.7837E+00   2.5783E−01 A14=−4.6378E−01   7.2781E−01   1.2481E+00 −1.8400E−01 −7.0981E−01−5.6009E−01 A16= — — — — —   2.3892E−01 Surface # 9 10 11 12 13 14 k=−2.3409E+00 −9.2901E+00 −4.6563E+00 −2.6137E+01 −1.5397E+00 −1.0476E+00A4=   2.8199E−02 −9.5121E−02 −6.3834E−02   4.3787E−02 −2.7963E−01−2.7773E−01 A6=   2.2055E−01   2.1680E−01 −7.5201E−02 −1.7331E−01  7.1739E−02   1.3261E−01 A8= −6.9374E−01 −4.1628E−01 −1.8643E−02  1.2310E−01   5.2214E−03 −5.2838E−02 A10=   8.7807E−01   5.5284E−01  7.0085E−02 −4.6184E−02 −5.3665E−03   1.5225E−02 A12= −4.3814E−01−3.5377E−01 −4.8807E−02   5.7871E−03   9.8204E−04 −2.7471E−03 A14=  4.8960E−02   9.6761E−02   7.2970E−03   1.0976E−03 −7.5446E−05  2.6802E−04 A16= — −8.2319E−03   1.2970E−03 −2.5978E−04   2.0456E−06−1.0624E−05

In the 5th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 5th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 9 and Table 10as the following values and satisfy the following conditions:

5th Embodiment f [mm] 3.95 Fno 2.24 HFOV [deg.] 39.2 R10/R11 1.14(|R9| + |R10|)/f 1.68 f/R6 −0.28 T34/T45 0.82 (T34 + T45)/CT3 1.10CT5/CT6 0.73 f1/|f3| 0.53 Σ(f/|fx|) 1.89

6th Embodiment

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure. FIG. 12 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 6thembodiment. In FIG. 11, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 690. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 600, a first lens element 610, a second lens element 620, a stop601, a third lens element 630, a fourth lens element 640, a fifth lenselement 650, a sixth lens element 660, an IR-cut filter 670 and an imagesurface 680, wherein the optical imaging lens assembly has a total ofsix lens elements (610-660). There is an air gap in a paraxial regionbetween every two lens elements (610-660) of the optical imaging lensassembly that are adjacent to each other. The stop 601, for example, isa glare stop or a field stop.

The first lens element 610 with positive refractive power has anobject-side surface 611 being convex and an image-side surface 612 beingconcave. The first lens element 610 is made of plastic material and hasthe object-side surface 611 and the image-side surface 612 being bothaspheric.

The second lens element 620 with negative refractive power has anobject-side surface 621 being convex and an image-side surface 622 beingconcave. The second lens element 620 is made of plastic material and hasthe object-side surface 621 and the image-side surface 622 being bothaspheric.

The third lens element 630 with positive refractive power has anobject-side surface 631 being convex and an image-side surface 632 beingconvex. The third lens element 630 is made of plastic material and hasthe object-side surface 631 and the image-side surface 632 being bothaspheric.

The fourth lens element 640 with negative refractive power has anobject-side surface 641 being concave and an image-side surface 642being convex. The fourth lens element 640 is made of plastic materialand has the object-side surface 641 and the image-side surface 642 beingboth aspheric.

The fifth lens element 650 with negative refractive power has anobject-side surface 651 being convex and an image-side surface 652 beingconcave. The fifth lens element 650 is made of plastic material and hasthe object-side surface 651 and the image-side surface 652 being bothaspheric. The image-side surface 652 of the fifth lens element 650 hasat least one convex shape in an off-axis region thereof. Each of theobject-side surface 651 and the image-side surface 652 of the fifth lenselement 650 has at least one inflection point.

The sixth lens element 660 with negative refractive power has anobject-side surface 661 being convex and an image-side surface 662 beingconcave. The sixth lens element 660 is made of plastic material and hasthe object-side surface 661 and the image-side surface 662 being bothaspheric. The image-side surface 662 of the sixth lens element 660 hasat least one convex shape in an off-axis region thereof.

In this embodiment, a central thickness of the sixth lens element 660 isthe largest among all central thicknesses of the lens elements (610-660)of the optical imaging lens assembly.

The IR-cut filter 670 is made of glass material and located between thesixth lens element 660 and the image surface 680, and will not affectthe focal length of the optical imaging lens assembly. The image sensor690 is disposed on or near the image surface 680 of the optical imaginglens assembly.

The detailed optical data of the 6th embodiment are shown in Table 11and the aspheric surface data are shown in Table 12 below.

TABLE 11 6th Embodiment f = 3.92 mm, Fno = 2.25, HFOV = 39.3 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.301 2 Lens 1 1.367 (ASP)0.483 Plastic 1.544 55.9 3.18 3 5.732 (ASP) 0.117 4 Lens 2 8.976 (ASP)0.230 Plastic 1.639 23.3 −6.09 5 2.686 (ASP) 0.173 6 Stop Plano 0.032 7Lens 3 4.789 (ASP) 0.351 Plastic 1.544 55.9 7.30 8 −22.549 (ASP) 0.281 9Lens 4 −1.755 (ASP) 0.310 Plastic 1.639 23.3 −29.71 10 −2.066 (ASP)0.237 11 Lens 5 2.787 (ASP) 0.357 Plastic 1.544 55.9 −130.70 12 2.561(ASP) 0.295 13 Lens 6 2.650 (ASP) 0.603 Plastic 1.535 55.8 −9.69 141.615 (ASP) 0.500 15 IR-cut filter Plano 0.210 Glass 1.517 64.2 — 16Plano 0.311 17 Image Plano — Note: Reference wavelength is 587.6 nm(d-line). Effective radius of the stop (Surface 6) is 0.840 mm.

TABLE 12 Aspheric Coefficients Surface # 2 3 4 5 7 8 k=   4.5055E−01−5.4007E+00 −9.0000E+01 −4.6700E+01 −1.5649E−01   3.3789E+01 A4=−2.6542E−02 −1.2343E−01 −2.7112E−01   4.6944E−02 −1.5983E−01 −4.1828E−02A6= −1.7588E−02   2.1354E−01   7.4281E−01 −4.5690E−02 −7.2869E−02−1.1397E−01 A8=   1.1914E−01 −3.5633E−01 −1.1026E+00   8.3817E−01  4.1132E−01   1.2793E−01 A10= −4.9454E−01   6.3664E−01   1.4849E+00−1.6482E+00 −1.0005E+00 −1.2400E−01 A12=   7.1251E−01 −8.0996E−01−1.5314E+00   1.5051E+00   1.1333E+00 −8.3060E−02 A14= −4.2279E−01  3.3622E−01   7.0493E−01 −4.3396E−01 −3.4795E−01   3.5867E−01 A16= — —— — — −1.6221E−01 Surface # 9 10 11 12 13 14 k= −1.5694E+00 −2.7587E+00−2.3304E+00 −2.6643E+01 −1.5200E+00 −1.0320E+00 A4=   9.6142E−02  5.9182E−02   1.0005E−02   1.2087E−01 −3.1606E−01 −2.8010E−01 A6=−3.3084E−01 −3.7988E−01 −2.3741E−01 −2.8776E−01   1.0721E−01  1.3280E−01 A8=   7.7711E−01   8.5004E−01   1.8510E−01   2.3166E−01−1.1727E−02 −5.2062E−02 A10= −1.1501E+00 −1.0617E+00 −4.7027E−02−1.1066E−01 −5.1060E−04   1.4843E−02 A12=   9.6543E−01   8.3945E−01−2.7990E−02   2.9726E−02   1.3852E−04 −2.6799E−03 A14= −3.2786E−01−3.6514E−01   1.8361E−02 −3.9905E−03   6.3739E−06   2.6455E−04 A16= —  6.4096E−02 −2.7186E−03   2.0049E−04 −1.3447E−06 −1.0688E−05

In the 6th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 6th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 11 and Table 12as the following values and satisfy the following conditions:

6th Embodiment f [mm] 3.92 Fno 2.25 HFOV [deg.] 39.3 R10/R11 0.97(|R9| + |R10|)/f 1.36 f/R6 −0.17 T34/T45 1.19 (T34 + T45)/CT3 1.48CT5/CT6 0.59 f1/|f3| 0.44 Σ(f/|fx|) 1.75

7th Embodiment

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure. FIG. 14 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 7thembodiment. In FIG. 13, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 790. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 700, a first lens element 710, a second lens element 720, a stop701, a third lens element 730, a fourth lens element 740, a fifth lenselement 750, a sixth lens element 760, an IR-cut filter 770 and an imagesurface 780, wherein the optical imaging lens assembly has a total ofsix lens elements (710-760). There is an air gap in a paraxial regionbetween every two lens elements (710-760) of the optical imaging lensassembly that are adjacent to each other. The stop 701, for example, aglare stop or a field stop.

The first lens element 710 with positive refractive power has anobject-side surface 711 being convex and an image-side surface 712 beingconcave. The first lens element 710 is made of plastic material and hasthe object-side surface 711 and the image-side surface 712 being bothaspheric.

The second lens element 720 with negative refractive power has anobject-side surface 721 being convex and an image-side surface 722 beingconcave. The second lens element 720 is made of plastic material and hasthe object-side surface 721 and the image-side surface 722 being bothaspheric.

The third lens element 730 with positive refractive power has anobject-side surface 731 being convex and an image-side surface 732 beingconvex. The third lens element 730 is made of plastic material and hasthe object-side surface 731 and the image-side surface 732 being bothaspheric.

The fourth lens element 740 with negative refractive power has anobject-side surface 741 being concave and an image-side surface 742being convex. The fourth lens element 740 is made of plastic materialand has the object-side surface 741 and the image-side surface 742 beingboth aspheric.

The fifth lens element 750 with negative refractive power has anobject-side surface 751 being convex and an image-side surface 752 beingconcave. The fifth lens element 750 is made of plastic material and hasthe object-side surface 751 and the image-side surface 752 being bothaspheric. The image-side surface 752 of the fifth lens element 750 hasat least one convex shape in an off-axis region thereof. Each of theobject-side surface 751 and the image-side surface 752 of the fifth lenselement 750 has at least one inflection point.

The sixth lens element 760 with negative refractive power has anobject-side surface 761 being convex and an image-side surface 762 beingconcave. The sixth lens element 760 is made of plastic material and hasthe object-side surface 761 and the image-side surface 762 being bothaspheric. The image-side surface 762 of the sixth lens element 760 hasat least one convex shape in an off-axis region thereof.

In this embodiment, a central thickness of the sixth lens element 760 isthe largest among all central thicknesses of the lens elements (710-760)of the optical imaging lens assembly.

The IR-cut filter 770 is made of glass material and located between thesixth lens element 760 and the image surface 780, and will not affectthe focal length of the optical imaging lens assembly. The image sensor790 is disposed on or near the image surface 780 of the optical imaginglens assembly.

The detailed optical data of the 7th embodiment are shown in Table 13and the aspheric surface data are shown in Table 14 below.

TABLE 13 7th Embodiment f = 3.94 mm, Fno = 2.25, HFOV = 39.1 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.300 2 Lens 1 1.376 (ASP)0.494 Plastic 1.544 55.9 3.12 3 6.390 (ASP) 0.111 4 Lens 2 12.787 (ASP)0.230 Plastic 1.639 23.3 −5.73 5 2.826 (ASP) 0.177 6 Ape. Stop Plano0.036 7 Lens 3 4.105 (ASP) 0.329 Plastic 1.544 55.9 7.25 8 −96.171 (ASP)0.277 9 Lens 4 −1.688 (ASP) 0.302 Plastic 1.639 23.3 −29.07 10 −1.986(ASP) 0.246 11 Lens 5 2.825 (ASP) 0.367 Plastic 1.544 55.9 −131.22 122.593 (ASP) 0.285 13 Lens 6 2.628 (ASP) 0.591 Plastic 1.535 55.8 −10.1014 1.629 (ASP) 0.500 15 IR-cut filter Plano 0.210 Glass 1.517 64.2 — 16Plano 0.336 17 Image Plano — Note: Reference wavelength is 587.6 nm(d-line). Effective radius of the stop (Surface 6) is 0.840 mm.

TABLE 14 Aspheric Coefficients Surface # 2 3 4 5 7 8 k= −2.5050E−01−1.5592E+01 −7.7637E+01 −5.4142E+01   2.5510E+00   3.3789E+01 A4=  9.3955E−03 −1.2920E−01 −2.9498E−01   2.0715E−02 −1.7051E−01−4.4707E−02 A6= −5.2465E−03   2.4227E−01   8.1006E−01   3.6564E−02−1.9471E−01 −7.5462E−02 A8=   1.4106E−01 −4.0069E−01 −1.1860E+00  5.7966E−01   8.2041E−01 −9.9864E−02 A10= −4.9306E−01   6.4843E−01  1.4534E+00 −1.2419E+00 −1.9515E+00   1.5529E−01 A12=   7.1251E−01−8.0996E−01 −1.3739E+00   1.2088E+00   2.2486E+00 −3.9315E−02 A14=−4.2279E−01   3.3622E−01   6.0887E−01 −3.3569E−01 −8.0409E−01  1.0134E−01 A16= — — — — — −3.8986E−02 Surface # 9 10 11 12 13 14 k=−2.2449E+00 −3.5517E+00 −1.8943E+00 −2.6644E+01 −3.1014E−04 −1.0064E+00A4=   6.4775E−02   3.7056E−03 −4.2169E−02   8.4350E−02 −3.3224E−01−2.8496E−01 A6= −9.3866E−02 −1.1357E−01 −9.3687E−02 −2.1017E−01  1.1941E−01   1.4101E−01 A8=   1.7564E−01   2.9245E−01 −3.5761E−03  1.5635E−01 −2.1979E−02 −5.8553E−02 A10= −3.7860E−01 −3.9079E−01  9.3846E−02 −6.9465E−02   3.7283E−03   1.7485E−02 A12=   5.0336E−01  3.9861E−01 −8.9810E−02   1.6722E−02 −8.1727E−04 −3.2544E−03 A14=−2.3621E−01 −2.2490E−01   3.3752E−02 −1.7573E−03   1.1714E−04  3.2772E−04 A16= —   4.8042E−02 −4.4192E−03   3.8924E−05 −6.5710E−06−1.3439E−05

In the 7th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 7th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 13 and Table 14as the following values and satisfy the following conditions:

7th Embodiment f [mm] 3.94 Fno 2.25 HFOV [deg.] 39.1 R10/R11 0.99(|R9| + |R10|)/f 1.38 f/R6 −0.04 T34/T45 1.13 (T34 + T45)/CT3 1.59CT5/CT6 0.62 f1/|f3| 0.43 Σ(f/|fx|) 1.79

8th Embodiment

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure. FIG. 16 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 8thembodiment. In FIG. 15, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 890. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 800, a first lens element 810, a second lens element 820, a stop801, a third lens element 830, a fourth lens element 840, a fifth lenselement 850, a sixth lens element 860, an IR-cut filter 870 and an imagesurface 880, wherein the optical imaging lens assembly has a total ofsix lens elements (810-860). There is an air gap in a paraxial regionbetween every two lens elements (810-860) of the optical imaging lensassembly that are adjacent to each other. The stop 801 is, for example,a glare stop or a field stop.

The first lens element 810 with positive refractive power has anobject-side surface 811 being convex and an image-side surface 812 beingconcave. The first lens element 810 is made of plastic material and hasthe object-side surface 811 and the image-side surface 812 being bothaspheric.

The second lens element 820 with negative refractive power has anobject-side surface 821 being convex and an image-side surface 822 beingconcave. The second lens element 820 is made of plastic material and hasthe object-side surface 821 and the image-side surface 822 being bothaspheric.

The third lens element 830 with positive refractive power has anobject-side surface 831 being convex and an image-side surface 832 beingconcave. The third lens element 830 is made of plastic material and hasthe object-side surface 831 and the image-side surface 832 being bothaspheric.

The fourth lens element 840 with negative refractive power has anobject-side surface 841 being concave and an image-side surface 842being convex. The fourth lens element 840 is made of plastic materialand has the object-side surface 841 and the image-side surface 842 beingboth aspheric.

The fifth lens element 850 with negative refractive power has anobject-side surface 851 being convex and an image-side surface 852 beingconcave. The fifth lens element 850 is made of plastic material and hasthe object-side surface 851 and the image-side surface 852 being bothaspheric. The image-side surface 852 of the fifth lens element 850 hasat least one convex shape in an off-axis region thereof. Each of theobject-side surface 851 and the image-side surface 852 of the fifth lenselement 850 has at least one inflection point.

The sixth lens element 860 with negative refractive power has anobject-side surface 861 being convex and an image-side surface 862 beingconcave. The sixth lens element 860 is made of plastic material and hasthe object-side surface 861 and the image-side surface 862 being bothaspheric. The image-side surface 862 of the sixth lens element 860 hasat least one convex shape in an off-axis region thereof.

In this embodiment, a central thickness of the sixth lens element 860 isthe largest among all central thicknesses of the lens elements (810-860)of the optical imaging lens assembly.

The IR-cut filter 870 is made of glass material and located between thesixth lens element 860 and the image surface 880, and will not affectthe focal length of the optical imaging lens assembly. The image sensor890 is disposed on or near the image surface 880 of the optical imaginglens assembly.

The detailed optical data of the 8th embodiment are shown in Table 15and the aspheric surface data are shown in Table 16 below.

TABLE 15 8th Embodiment f = 4.00 mm, Fno = 2.25, HFOV = 38.7 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.284 2 Lens 1 1.416 (ASP)0.498 Plastic 1.544 55.9 3.15 3 7.133 (ASP) 0.142 4 Lens 2 99.152 (ASP)0.230 Plastic 1.639 23.3 −5.32 5 3.285 (ASP) 0.166 6 stop Plano 0.025 7Lens 3 3.165 (ASP) 0.353 Plastic 1.544 55.9 6.61 8 25.541 (ASP) 0.269 9Lens 4 −1.878 (ASP) 0.346 Plastic 1.639 23.3 −28.05 10 −2.248 (ASP)0.220 11 Lens 5 2.850 (ASP) 0.396 Plastic 1.544 55.9 −133.13 12 2.608(ASP) 0.309 13 Lens 6 2.628 (ASP) 0.586 Plastic 1.535 55.8 −10.11 141.631 (ASP) 0.500 15 IR-cut filter Plano 0.210 Glass 1.517 64.2 — 16Plano 0.343 17 Image Plano — Note: Reference wavelength is 587.6 nm(d-line). Effective radius of the stop (Surface 6) is 0.860 mm.

TABLE 16 Aspheric Coefficients Surface # 2 3 4 5 7 8 k= −1.7695E−01  1.7512E+01 −7.7637E+01 −4.6303E+01 −7.2258E−01   3.3789E+01 A4=  9.8756E−04 −1.1498E−01 −2.2474E−01 −9.5910E−02 −2.1066E−01 −8.9908E−03A6= −1.5936E−02   2.0778E−01   7.1535E−01   5.6651E−01   8.5208E−02−3.3269E−01 A8=   1.4728E−01 −4.7627E−01 −1.0876E+00 −8.7163E−01−1.5912E−01   8.5564E−01 A10= −5.1869E−01   7.1777E−01   1.1840E+00  1.2084E+00   3.2383E−01 −1.7581E+00 A12=   7.1251E−01 −8.0996E−01−9.9983E−01 −1.2124E+00 −5.7054E−01   2.1915E+00 A14= −4.2279E−01  3.3622E−01   4.5929E−01   6.6760E−01   4.6527E−01 −1.4237E+00 A16= — —— — —   4.0592E−01 Surface # 9 10 11 12 13 14 k= −2.1587E+00 −3.1745E+00−1.7820E+00 −2.6644E+01 −1.5060E−03 −1.0107E+00 A4=   1.1245E−01  8.0193E−02   1.5377E−02   9.8352E−02 −3.3969E−01 −2.8929E−01 A6=−3.0923E−01 −3.7827E−01 −2.6266E−01 −2.3128E−01   1.3597E−01  1.4994E−01 A8=   5.4807E−01   7.2234E−01   2.4210E−01   1.8205E−01−3.5395E−02 −6.6024E−02 A10= −6.4125E−01 −7.9971E−01 −1.1859E−01−8.8035E−02   9.1118E−03   2.0470E−02 A12=   5.0357E−01   6.0423E−01  1.7238E−02   2.4477E−02 −1.9642E−03 −3.8702E−03 A14= −1.7917E−01−2.6526E−01   5.0242E−03 −3.4206E−03   2.4173E−04   3.9141E−04 A16= —  4.7778E−02 −1.2477E−03   1.8008E−04 −1.2018E−05 −1.6058E−05

In the 8th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 8th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 15 and Table 16as the following values and satisfy the following conditions:

8th Embodiment f [mm] 4.00 Fno 2.25 HFOV [deg.] 38.7 R10/R11 0.99(|R9| + |R10|)/f 1.36 f/R6 0.16 T34/T45 1.22 (T34 + T45)/CT3 1.39CT5/CT6 0.68 f1/|f3| 0.48 Σ(f/|fx|) 1.93

9th Embodiment

FIG. 17 is a schematic view of an image capturing unit according to the9th embodiment of the present disclosure. FIG. 18 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 9thembodiment. In FIG. 17, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 990. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 900, a first lens element 910, a second lens element 920, a thirdlens element 930, a fourth lens element 940, a fifth lens element 950, asixth lens element 960, an IR-cut filter 970 and an image surface 980,wherein the optical imaging lens assembly has a total of six lenselements (910-960). There is an air gap in a paraxial region betweenevery two lens elements (910-960) of the optical imaging lens assemblythat are adjacent to each other.

The first lens element 910 with positive refractive power has anobject-side surface 911 being convex and an image-side surface 912 beingconcave. The first lens element 910 is made of plastic material and hasthe object-side surface 911 and the image-side surface 912 being bothaspheric.

The second lens element 920 with negative refractive power has anobject-side surface 921 being convex and an image-side surface 922 beingconcave. The second lens element 920 is made of plastic material and hasthe object-side surface 921 and the image-side surface 922 being bothaspheric.

The third lens element 930 with positive refractive power has anobject-side surface 931 being convex and an image-side surface 932 beingconvex. The third lens element 930 is made of plastic material and hasthe object-side surface 931 and the image-side surface 932 being bothaspheric.

The fourth lens element 940 with negative refractive power has anobject-side surface 941 being concave and an image-side surface 942being convex. The fourth lens element 940 is made of plastic materialand has the object-side surface 941 and the image-side surface 942 beingboth aspheric.

The fifth lens element 950 with negative refractive power has anobject-side surface 951 being convex and an image-side surface 952 beingconcave. The fifth lens element 950 is made of plastic material and hasthe object-side surface 951 and the image-side surface 952 being bothaspheric. The image-side surface 952 of the fifth lens element 950 hasat least one convex shape in an off-axis region thereof. Each of theobject-side surface 951 and the image-side surface 952 of the fifth lenselement 950 has at least one inflection point.

The sixth lens element 960 with negative refractive power has anobject-side surface 961 being convex and an image-side surface 962 beingconcave. The sixth lens element 960 is made of plastic material and hasthe object-side surface 961 and the image-side surface 962 being bothaspheric. The image-side surface 962 of the sixth lens element 960 hasat least one convex shape in an off-axis region thereof.

In this embodiment, a central thickness of the sixth lens element 960 isthe largest among all central thicknesses of the lens elements (910-960)of the optical imaging lens assembly.

The IR-cut filter 970 is made of glass material and located between thesixth lens element 960 and the image surface 980, and will not affectthe focal length of the optical imaging lens assembly. The image sensor990 is disposed on or near the image surface 980 of the optical imaginglens assembly.

The detailed optical data of the 9th embodiment are shown in Table 17and Table 18 below.

TABLE 17 9th Embodiment f = 3.89 mm, Fno = 2.28, HFOV = 39.2 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.246 2 Lens 1 1.481 (ASP)0.495 Plastic 1.545 56.1 2.89 3 21.556 (ASP) 0.055 4 Lens2 6.901 (ASP)0.200 Plastic 1.633 23.4 −6.18 5 2.468 (ASP) 0.322 6 Lens 3 12.760 (ASP)0.334 Plastic 1.545 56.1 13.88 7 −18.401 (ASP) 0.229 8 Lens 4 −2.628(ASP) 0.325 Plastic 1.660 20.4 −30.52 9 −3.171 (ASP) 0.192 10 Lens 55.691 (ASP) 0.505 Plastic 1.545 56.1 −34.71 11 4.238 (ASP) 0.208 12 Lens6 1.826 (ASP) 0.683 Plastic 1.545 56.1 −31.87 13 1.434 (ASP) 0.500 14IR-cut filter Plano 0.145 Glass 1.517 64.2 — 15 Plano 0.407 16 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 18 Aspheric Coefficients Surface # 2 3 4 5 6 7 k= −2.2657E−01  8.9806E+01   8.2220E+00   6.7332E−01   3.1334E+01   6.9002E+01 A4=  4.4458E−03 −1.4976E−01 −2.5511E−01 −1.5952E−01 −1.4976E−01 −1.6020E−01A6=   8.4689E−03   5.6075E−01   1.0030E+00   5.6011E−01 −1.3201E−01−1.9698E−02 A8=   1.1479E−02 −1.3307E+00 −2.3088E+00 −1.0050E+00  7.1474E−01   2.6260E−01 A10= −1.8157E−01   1.9355E+00   3.6908E+00  1.2813E+00 −1.9848E+00 −5.8318E−01 A12=   3.1603E−01 −1.7568E+00−3.4439E+00 −5.5162E−01   2.8128E+00   6.3839E−01 A14= −2.3433E−01  6.4059E−01   1.3251E+00 −7.7341E−02 −1.3102E+00 −1.6825E−01 A16= — — —— — −3.4739E−02 Surface # 8 9 10 11 12 13 k=   4.7153E+00 −3.4985E+00  5.2549E+00 −8.2386E+01 −2.0004E+00 −1.0205E+00 A4= −9.0443E−02−7.6072E−02   9.1280E−02   1.1323E−01 −3.1315E−01 −2.7083E−01 A6=  2.1192E−01   6.6048E−03 −2.9622E−01 −1.2814E−01   1.9848E−01  1.3981E−01 A8=   5.5814E−04   1.8485E−01   3.1878E−01   6.3796E−02−9.1872E−02 −5.7565E−02 A10= −9.2947E−02 −1.8491E−01 −2.4621E−01−2.2121E−02   2.7334E−02   1.4998E−02 A12=   6.1418E−02   9.3621E−02  1.2098E−01   5.1664E−03 −4.7058E−03 −2.3034E−03 A14= −1.2485E−02−3.1779E−02 −3.3011E−02 −7.2933E−04   4.2811E−04   1.9180E−04 A16= —  5.3715E−03   3.7773E−03   4.5865E−05 −1.6007E−05 −6.6755E−06

In the 9th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 9th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 17 and Table 18as the following values and satisfy the following conditions:

9th Embodiment f [mm] 3.89 Fno 2.28 HFOV [deg.] 39.2 R10/R11 2.32(|R9| + |R10|)/f 2.55 f/R6 −0.21 T34/T45 1.19 (T34 + T45)/CT3 1.26CT5/CT6 0.74 f1/|f3| 0.21 Σ(f/|fx|) 1.27

10th Embodiment

FIG. 19 is a schematic view of an image capturing unit according to the10th embodiment of the present disclosure. FIG. 20 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 10thembodiment. In FIG. 19, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 1090. The optical imaging lens assemblyincludes, in order from an object side to an image side, an aperturestop 1000, a first lens element 1010, a second lens element 1020, a stop1001, a third lens element 1030, a fourth lens element 1040, a fifthlens element 1050, a sixth lens element 1060, an IR-cut filter 1070 andan image surface 1080, wherein the optical imaging lens assembly has atotal of six lens elements (1010-1060). There is an air gap in aparaxial region between every two lens elements (1010-1060) of theoptical imaging lens assembly that are adjacent to each other. The stop1001 is, for example, a glare stop or a field stop.

The first lens element 1010 with positive refractive power has anobject-side surface 1011 being convex and an image-side surface 1012being convex. The first lens element 1010 is made of plastic materialand has the object-side surface 1011 and the image-side surface 1012being both aspheric.

The second lens element 1020 with negative refractive power has anobject-side surface 1021 being convex and an image-side surface 1022being concave. The second lens element 1020 is made of plastic materialand has the object-side surface 1021 and the image-side surface 1022being both aspheric.

The third lens element 1030 with positive refractive power has anobject-side surface 1031 being convex and an image-side surface 1032being convex. The third lens element 1030 is made of plastic materialand has the object-side surface 1031 and the image-side surface 1032being both aspheric.

The fourth lens element 1040 with negative refractive power has anobject-side surface 1041 being concave and an image-side surface 1042being convex. The fourth lens element 1040 is made of plastic materialand has the object-side surface 1041 and the image-side surface 1042being both aspheric.

The fifth lens element 1050 with negative refractive power has anobject-side surface 1051 being convex and an image-side surface 1052being concave. The fifth lens element 1050 is made of plastic materialand has the object-side surface 1051 and the image-side surface 1052being both aspheric. The image-side surface 1052 of the fifth lenselement 1050 has at least one convex shape in an off-axis regionthereof. Each of the object-side surface 1051 and the image-side surface1052 of the fifth lens element 1050 has at least one inflection point.

The sixth lens element 1060 with negative refractive power has anobject-side surface 1061 being convex and an image-side surface 1062being concave. The sixth lens element 1060 is made of plastic materialand has the object-side surface 1061 and the image-side surface 1062being both aspheric. The image-side surface 1062 of the sixth lenselement 1060 has at least one convex shape in an off-axis regionthereof.

In this embodiment, a central thickness of the sixth lens element 1060is the largest among all central thicknesses of the lens elements(1010-1060) of the optical imaging lens assembly.

The IR-cut filter 1070 is made of glass material and located between thesixth lens element 1060 and the image surface 1080, and will not affectthe focal length of the optical imaging lens assembly. The image sensor1090 is disposed on or near the image surface 1080 of the opticalimaging lens assembly.

The detailed optical data of the 10th embodiment are shown in Table 19and Table 20 below.

TABLE 19 10th Embodiment f = 4.30 mm, Fno = 1.95, HFOV = 36.4 deg.Surface Focal # Curvature Radius Thickness Material Index Abbe # Length0 Object Plano Infinity 1 Ape. Stop Plano −0.343 2 Lens 1 1.624 (ASP)0.661 Plastic 1.544 56.0 2.94 3 −83.186 (ASP) 0.053 4 Lens 2 15.401(ASP) 0.230 Plastic 1.614 25.6 −4.94 5 2.522 (ASP) 0.305 6 Stop Plano0.007 7 Lens 3 7.548 (ASP) 0.457 Plastic 1.544 56.0 11.73 8 −40.393(ASP) 0.265 9 Lens 4 −5.052 (ASP) 0.414 Plastic 1.660 20.4 −51.20 10−6.134 (ASP) 0.235 11 Lens 5 2.990 (ASP) 0.340 Plastic 1.544 56.0−143.41 12 2.764 (ASP) 0.323 13 Lens 6 2.717 (ASP) 0.681 Plastic 1.54456.0 −10.78 14 1.693 (ASP) 0.524 15 IR-cut filter Plano 0.220 Glass1.517 64.2 — 16 Plano 0.286 17 Image Plano — Note: Reference wavelengthis 587.6 nm (d-line). Effective radius of the stop (Surface 6) is 0.950mm.

TABLE 20 Aspheric Coefficients Surface # 2 3 4 5 7 8 k= −4.6583E−01−1.0000E+00 −9.0000E+01 −2.3592E+00 −1.0000E+00   0.0000E+00 A4=  8.5233E−03 −1.4856E−01 −2.6280E−01 −1.4985E−01 −9.8082E−02 −8.9292E−02A6= −2.2950E−03   5.1981E−01   9.4527E−01   5.1956E−01   4.5968E−03  3.2295E−02 A8=   4.1493E−02 −9.5366E−01 −1.8143E+00 −9.3157E−01  7.6452E−02 −1.0241E−01 A10= −1.1495E−01   9.7608E−01   2.1123E+00  1.0582E+00 −3.2595E−01   9.5789E−02 A12=   1.1618E−01 −5.5500E−01−1.3356E+00 −5.3906E−01   5.3929E−01 −2.3060E−02 A14= −4.9259E−02  1.2721E−01   3.4672E−01   9.0869E−02 −2.3598E−01   6.8680E−02 A16= — —— — — −3.7622E−02 Surface # 9 10 11 12 13 14 k=   6.1213E+00 −6.6640E+00  1.4688E+00 −1.9290E+00 −1.8191E+00 −8.2945E−01 A4= −5.4533E−02−3.2569E−02   4.1527E−02   3.4671E−02 −2.4032E−01 −2.2769E−01 A6=  2.3744E−02 −9.0012E−02 −2.3830E−01 −1.0344E−01   1.0316E−01  1.0577E−01 A8= −3.3179E−02   1.7899E−01   2.1163E−01   6.5663E−02−1.1881E−02 −4.1114E−02 A10= −3.4010E−02 −1.6933E−01 −1.2947E−01−2.2620E−02 −3.8765E−03   1.1224E−02 A12=   1.0170E−01   1.0358E−01  5.1071E−02   4.6365E−03   1.3880E−03 −1.9791E−03 A14= −4.5073E−02−3.5257E−02 −1.1495E−02 −5.4963E−04 −1.5922E−04   1.9668E−04 A16= —  4.6840E−03   1.1172E−03   2.9446E−05   6.3369E−06 −8.1700E−06

In the 10th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 10th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 19 and Table 20as the following values and satisfy the following conditions:

10th Embodiment f [mm] 4.30 Fno 1.95 HFOV [deg.] 36.4 R10/R11 1.02(|R9| + |R10|)/f 1.34 f/R6 −0.11 T34/T45 1.13 (T34 + T45)/CT3 1.09CT5/CT6 0.50 f1/|f3| 0.25 Σ(f/|fx|) 1.75

The foregoing description, for the purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTABLES 1-20 show different data of the different embodiments; however,the data of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, to therebyenable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. An optical imaging lens assembly comprising, inorder from an object side to an image side: a first lens element withpositive refractive power having an object-side surface being convex; asecond lens element with negative refractive power having an object-sidesurface being convex and an image-side surface being concave; a thirdlens element; a fourth lens element with negative refractive powerhaving an object-side surface being concave; a fifth lens element withnegative refractive power having an object-side surface being convex andan image-side surface being concave, wherein the image-side surface ofthe fifth lens element has at least one convex shape in an off-axisregion thereof, and the image-side surface of the fifth lens element isaspheric; and a sixth lens element having an object-side surface beingconvex and an image-side surface being concave, wherein the image-sidesurface of the sixth lens element has at least one convex shape in anoff-axis region thereof, and the image-side surface of the sixth lenselement is aspheric; wherein the optical imaging lens assembly has atotal of six lens elements, there is an air gap in a paraxial regionlocated between every two lens elements of the optical imaging lensassembly that are adjacent to each other; a curvature radius of theimage-side surface of the fifth lens element is R10, a curvature radiusof the object-side surface of the sixth lens element is R11, an axialdistance between the third lens element and the fourth lens element isT34, an axial distance between the fourth lens element and the fifthlens element is T45, and the following conditions are satisfied:0<T34/T45<6.0; and0.30<R10/R11<2.0.
 2. The optical imaging lens assembly of claim 1,wherein a central thickness of the third lens element is CT3, the axialdistance between the third lens element and the fourth lens element isT34, the axial distance between the fourth lens element and the fifthlens element is T45, and the following condition is satisfied:0.90<(T34+T45)/CT3.
 3. The optical imaging lens assembly of claim 2,wherein a focal length of the first lens element is f1, a focal lengthof the second lens element is f2, a focal length of the third lenselement is f3, a focal length of the fourth lens element is f4, a focallength of the fifth lens element is f5, a focal length of the sixth lenselement is f6, a focal length of the x-th lens element is fx, and thefollowing condition is satisfied:f1<|fx|, wherein x=2,3,4,5,6.
 4. The optical imaging lens assembly ofclaim 1, wherein the curvature radius of the image-side surface of thefifth lens element is R10, the curvature radius of the object-sidesurface of the sixth lens element is R11, and the following condition issatisfied:0.30<R10/R11<1.45.
 5. The optical imaging lens assembly of claim 1,wherein the axial distance between the third lens element and the fourthlens element is T34, the axial distance between the fourth lens elementand the fifth lens element is T45, and the following condition issatisfied:0.20<T34/T45<4.2.
 6. The optical imaging lens assembly of claim 5,wherein the axial distance between the third lens element and the fourthlens element is T34, the axial distance between the fourth lens elementand the fifth lens element is T45, and the following condition issatisfied:0.40<T34/T45<3.0.
 7. The optical imaging lens assembly of claim 1,wherein a central thickness of the sixth lens element is the largestamong all central thicknesses of the lens elements of the opticalimaging lens assembly.
 8. The optical imaging lens assembly of claim 1,wherein a central thickness of the third lens element is CT3, the axialdistance between the third lens element and the fourth lens element isT34, the axial distance between the fourth lens element and the fifthlens element is T45, and the following condition is satisfied:1.15<(T34+T45)/CT3<3.5.
 9. The optical imaging lens assembly of claim 1,wherein a focal length of the first lens element is f1, a focal lengthof the third lens element is f3, and the following condition issatisfied:0<f1/|f3|<0.45.
 10. The optical imaging lens assembly of claim 1,wherein a focal length of the optical imaging lens assembly is f, acurvature radius of an image-side surface of the third lens element isR6, and the following condition is satisfied:−1.0<f/R6<0.25.
 11. The optical imaging lens assembly of claim 1,wherein a focal length of the optical imaging lens assembly is f, acurvature radius of the object-side surface of the fifth lens element isR9, the curvature radius of the image-side surface of the fifth lenselement is R10, and the following condition is satisfied:(|R9|+|R10|)/f<3.60.
 12. The optical imaging lens assembly of claim 1,wherein a focal length of the optical imaging lens assembly is f, afocal length of the second lens element is f2, a focal length of thethird lens element is f3, a focal length of the fourth lens element isf4, a focal length of the fifth lens element is f5, a focal length ofthe sixth lens element is f6, a focal length of the x-th lens element isfx, and the following condition is satisfied:0.75<Σ(f/|fx|)<2.0, wherein x=2,3,4,5,6.
 13. An image capturing unit,comprising: the optical imaging lens assembly of claim 1; and an imagesensor, wherein the image sensor is disposed on an image surface of theoptical imaging lens assembly.
 14. An electronic device, comprising: theimage capturing unit of claim
 13. 15. An optical imaging lens assemblycomprising, in order from an object side to an image side: a first lenselement with positive refractive power having an object-side surfacebeing convex; a second lens element with negative refractive powerhaving an object-side surface being convex and an image-side surfacebeing concave; a third lens element; a fourth lens element with negativerefractive power having an object-side surface being concave and animage-side surface being convex; a fifth lens element with negativerefractive power having an object-side surface being convex and animage-side surface being concave, wherein at least one of theobject-side surface and the image-side surface of the fifth lens elementhas at least one inflection point; and a sixth lens element withnegative refractive power having an object-side surface being convex andan image-side surface being concave, wherein the image-side surface ofthe sixth lens element has at least one convex shape in an off-axisregion thereof, and the image-side surface of the sixth lens element isaspheric; wherein the optical imaging lens assembly has a total of sixlens elements, and there is an air gap in a paraxial region locatedbetween every two lens elements of the optical imaging lens assemblythat are adjacent to each other; a focal length of the optical imaginglens assembly is f, a curvature radius of the object-side surface of thefifth lens element is R9, a curvature radius of the image-side surfaceof the fifth lens element is R10, a curvature radius of the object-sidesurface of the sixth lens element is R11, an axial distance between thethird lens element and the fourth lens element is T34, an axial distancebetween the fourth lens element and the fifth lens element is T45, andthe following conditions are satisfied:0.75<(|R9|+|R10|)/f≤2.55;0<T34/T45<6.0; and0.30<R10/R11.
 16. The optical imaging lens assembly of claim 15, whereina central thickness of the third lens element is CT3, the axial distancebetween the third lens element and the fourth lens element is T34, theaxial distance between the fourth lens element and the fifth lenselement is T45, and the following condition is satisfied:0.90<(T34+T45)/CT3.
 17. The optical imaging lens assembly of claim 15,wherein the curvature radius of the image-side surface of the fifth lenselement is R10, the curvature radius of the object-side surface of thesixth lens element is R11, and the following condition is satisfied:0.30<R10/R11<2.0.
 18. The optical imaging lens assembly of claim 17,wherein the curvature radius of the image-side surface of the fifth lenselement is R10, the curvature radius of the object-side surface of thesixth lens element is R11, and the following condition is satisfied:0.30<R10/R11<1.45.
 19. The optical imaging lens assembly of claim 15,wherein the axial distance between the third lens element and the fourthlens element is T34, the axial distance between the fourth lens elementand the fifth lens element is T45, and the following condition issatisfied:0.20<T34/T45<4.2.
 20. The optical imaging lens assembly of claim 19,wherein the axial distance between the third lens element and the fourthlens element is T34, the axial distance between the fourth lens elementand the fifth lens element is T45, and the following condition issatisfied:0.40<T34/T45<3.0.
 21. The optical imaging lens assembly of claim 15,wherein the focal length of the optical imaging lens assembly is f, acurvature radius of an image-side surface of the third lens element isR6, and the following condition is satisfied:−1.0<f/R6<0.25.
 22. The optical imaging lens assembly of claim 15,wherein a central thickness of the third lens element is CT3, the axialdistance between the third lens element and the fourth lens element isT34, the axial distance between the fourth lens element and the fifthlens element is T45, and the following condition is satisfied:1.15<(T34+T45)/CT3<3.5.
 23. The optical imaging lens assembly of claim15, wherein the focal length of the optical imaging lens assembly is f,a focal length of the second lens element is f2, a focal length of thethird lens element is f3, a focal length of the fourth lens element isf4, a focal length of the fifth lens element is f5, a focal length ofthe sixth lens element is f6, a focal length of the x-th lens element isfx, and the following condition is satisfied:0.75<Σ(f/|fx|)<2.0, wherein x=2,3,4,5,6.
 24. The optical imaging lensassembly of claim 15, wherein a central thickness of the fifth lenselement is CT5, a central thickness of the sixth lens element is CT6,and the following condition is satisfied:0<CT5/CT6<1.75.